3 files changed, 8 insertions, 0 deletions

diff --git a/llvm/lib/IR/Globals.cpp b/llvm/lib/IR/Globals.cpp
index 4d8b9cef544..a70ea0f37b9 100644
--- a/llvm/lib/IR/Globals.cpp
+++ b/llvm/lib/IR/Globals.cpp
@@ -53,6 +53,7 @@ void GlobalValue::copyAttributesFrom(const GlobalValue *Src) {
   setSection(Src->getSection());
   setVisibility(Src->getVisibility());
   setUnnamedAddr(Src->hasUnnamedAddr());
+  setDLLStorageClass(Src->getDLLStorageClass());
 }
 
 void GlobalValue::setAlignment(unsigned Align) {
diff --git a/llvm/test/Linker/dllstorage-a.ll b/llvm/test/Linker/dllstorage-a.ll
new file mode 100644
index 00000000000..91b98184f8b
--- /dev/null
+++ b/llvm/test/Linker/dllstorage-a.ll
@@ -0,0 +1,4 @@
+; RUN: llvm-link %s %p/dllstorage-b.ll -S -o - | FileCheck %s
+@foo = external global i32
+
+; CHECK: @foo = dllexport global i32 42
diff --git a/llvm/test/Linker/dllstorage-b.ll b/llvm/test/Linker/dllstorage-b.ll
new file mode 100644
index 00000000000..4c7dbcd19bd
--- /dev/null
+++ b/llvm/test/Linker/dllstorage-b.ll
@@ -0,0 +1,3 @@
+; RUN: true
+
+@foo = dllexport global i32 42